Branded campaigns target people already searching for your business name. Generic campaigns go after people searching for what you sell but do not know you yet. Most marketers protect their brand with a small budget since those clicks are cheap and convert well, then put the bigger spend into generic keywords to bring in new customers. The exact split depends on how well-known the brand is. A new business might spend almost nothing on branded terms. So what do you think is a fair budget split between branded and generic search for a business that is two years old?